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What happen if we have run 415 V,50Hz designed motor at on
480V,60HZ
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Answer Posted / kiran
In AC motors Speed is directly proptional to supply Voltage
& suplly Frequency.hence Speed increases but U increasing
Voltage more than 5% hence insulation get weaker & due to
supply frequency hystersis & eddy current loss increase
hence temperature increse & this case motormay damage
within some time
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